feat(container)!: Update image prometheus-pushgateway to v3

[renovate]

This PR contains the following updates:

Package	Update	Change
prometheus-pushgateway	major	2.6.0 → 3.6.0

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[github-actions]

--- kubernetes/apps/monitoring/prometheus-pushgateway/app Kustomization: flux-system/cluster-apps-prometheus-pushgateway HelmRelease: monitoring/prometheus-pushgateway

+++ kubernetes/apps/monitoring/prometheus-pushgateway/app Kustomization: flux-system/cluster-apps-prometheus-pushgateway HelmRelease: monitoring/prometheus-pushgateway

@@ -12,13 +12,13 @@

     spec:
       chart: prometheus-pushgateway
       sourceRef:
         kind: HelmRepository
         name: prometheus-community
         namespace: flux-system
-      version: 2.6.0
+      version: 3.4.1
   dependsOn:
   - name: local-path-provisioner
     namespace: kube-system
   install:
     remediation:
       retries: 3

[github-actions]

--- HelmRelease: monitoring/prometheus-pushgateway ServiceAccount: monitoring/prometheus-pushgateway

+++ HelmRelease: monitoring/prometheus-pushgateway ServiceAccount: monitoring/prometheus-pushgateway

@@ -5,7 +5,8 @@

   labels:
     app.kubernetes.io/name: prometheus-pushgateway
     app.kubernetes.io/instance: prometheus-pushgateway
     app.kubernetes.io/managed-by: Helm
   name: prometheus-pushgateway
   namespace: monitoring
+automountServiceAccountToken: true
 
--- HelmRelease: monitoring/prometheus-pushgateway Deployment: monitoring/prometheus-pushgateway

+++ HelmRelease: monitoring/prometheus-pushgateway Deployment: monitoring/prometheus-pushgateway

@@ -21,15 +21,16 @@

       labels:
         app.kubernetes.io/name: prometheus-pushgateway
         app.kubernetes.io/instance: prometheus-pushgateway
         app.kubernetes.io/managed-by: Helm
     spec:
       serviceAccountName: prometheus-pushgateway
+      automountServiceAccountToken: true
       containers:
       - name: pushgateway
-        image: quay.io/prometheus/pushgateway:v1.7.0
+        image: quay.io/prometheus/pushgateway:v1.11.1
         imagePullPolicy: IfNotPresent
         ports:
         - name: metrics
           containerPort: 9091
           protocol: TCP
         livenessProbe: